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CHAPTER 23 ELECTRICAL SPECIFICATIONS ((A2) grade product)
User’s Manual U17446EJ5V0UD
357
(A2) grade product TA =
40 to +125°C
Note 2.
This varies depending on the allowable total loss (see the figure below).
40
0
+40
+80
+85
Temperature [C]
Total
loss
P
T
[mW]
+120
50
100
150
120
+125
110
Use the following formula to perform design such that the sum of the power consumption of the device is
less than or equal to the total loss PT (use at 80% or less of the rated value is recommended).
Total power consumption = VDD × {IDD ∑IOH} + ∑{(VDD VOH) × IOH} + ∑(VOL × IOL)
When guaranteeing the internal pull-up resistor, use the following formula to calculate its power
consumption, and add the result to the result above.
Power consumption of internal pull-up resistor = Σ(VDD/RPU × VDD)